package com.atguigu.gulimall.seckill.scheduled;

import com.atguigu.gulimall.seckill.service.SeckillService;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

/**
 * 秒杀商品的定时上架
 *  每天三点上架最近要秒杀的商品
 */
@Slf4j
@EnableScheduling
@Service
public class SeckillSkuScheduled {

    @Autowired
    SeckillService seckillService;

    @Autowired
    RedissonClient redissonClient;

    private final String upload_lock = "seckill:upload:lock";

    /**
     * 上架最近三天的秒杀商品
     *
     * 当天 0：00-3:00
     */
    @Scheduled(cron = "0 0 3 * * ?")
    public void uploadSeckillSkuLatest3Day(){
        //正在上架商品
        log.info("正在上架商品");
        //加上一个分布式锁
        RLock lock = redissonClient.getLock(upload_lock);
        lock.lock(10, TimeUnit.SECONDS);
        try{
            seckillService.uploadSeckillSkuLatest3Day();
        }finally {
            lock.unlock();
        }
    }
}
